diff --git a/README.md b/README.md
index 38544e84e..b4ef97a5b 100755
--- a/README.md
+++ b/README.md
@@ -194,6 +194,8 @@ Basic usage for building php with some extensions:
 
 # fetch all libraries
 ./bin/spc download --all
+# dump a list of extensions required by your project
+./bin/spc dump-extensions
 # only fetch necessary sources by needed extensions (recommended)
 ./bin/spc download --for-extensions="openssl,pcntl,mbstring,pdo_sqlite"
 # download pre-built libraries first (save time for compiling dependencies)
diff --git a/docs/en/guide/manual-build.md b/docs/en/guide/manual-build.md
index a0b02b08b..f86374b8e 100644
--- a/docs/en/guide/manual-build.md
+++ b/docs/en/guide/manual-build.md
@@ -397,6 +397,31 @@ manually unpack and copy the package to a specified location, and we can use com
 bin/spc extract php-src,libxml2
 ```
 
+## Command - dump-extensions
+
+Use the command `bin/spc dump-extensions` to export required extensions of the current project.
+
+```bash
+# Print the extension list of the project, pass in the root directory of the project containing composer.json
+bin/spc dump-extensions /path/to/your/project/
+
+# Print the extension list of the project, excluding development dependencies
+bin/spc dump-extensions /path-to/tour/project/ --no-dev
+
+# Output in the extension list format acceptable to the spc command (comma separated)
+bin/spc dump-extensions /path-to/tour/project/ --format=text
+
+# Output as a JSON list
+bin/spc dump-extensions /path-to/tour/project/ --format=json
+
+# When the project does not have any extensions, output the specified extension combination instead of returning failure
+bin/spc dump-extensions /path-to/your/project/ --no-ext-output=mbstring,posix,pcntl,phar
+
+# Do not exclude extensions not supported by spc when outputting
+bin/spc dump-extensions /path/to/your/project/ --no-spc-filter
+```
+It should be noted that the project directory must contain the `vendor/installed.json` and `composer.lock` files, otherwise they cannot be found normally.
+
 ## Dev Command - dev
 
 Debug commands refer to a collection of commands that can assist in outputting some information 
diff --git a/docs/zh/guide/manual-build.md b/docs/zh/guide/manual-build.md
index 3d523fe60..a05ccfc4b 100644
--- a/docs/zh/guide/manual-build.md
+++ b/docs/zh/guide/manual-build.md
@@ -353,6 +353,32 @@ memory_limit=1G
 bin/spc extract php-src,libxml2
 ```
 
+## 命令 dump-extensions - 导出项目扩展依赖
+
+使用命令 `bin/spc dump-extensions` 可以导出当前项目的扩展依赖。
+
+```bash
+# 打印项目的扩展列表，传入项目包含composer.json的根目录
+bin/spc dump-extensions /path/to/your/project/
+
+# 打印项目的扩展列表，不包含开发依赖
+bin/spc dump-extensions /path-to/tour/project/ --no-dev
+
+# 输出为 spc 命令可接受的扩展列表格式（逗号分割）
+bin/spc dump-extensions /path-to/tour/project/ --format=text
+
+# 输出为 JSON 列表
+bin/spc dump-extensions /path-to/tour/project/ --format=json
+
+# 当项目没有任何扩展时，输出指定扩展组合，而不是返回失败
+bin/spc dump-extensions /path-to/your/project/ --no-ext-output=mbstring,posix,pcntl,phar
+
+# 输出时不排除 spc 不支持的扩展
+bin/spc dump-extensions /path/to/your/project/ --no-spc-filter
+```
+
+需要注意的是，项目的目录下必须包含 `vendor/installed.json` 和 `composer.lock` 文件，否则无法正常获取。
+
 ## 调试命令 dev - 调试命令集合
 
 调试命令指的是你在使用 static-php-cli 构建 PHP 或改造、增强 static-php-cli 项目本身的时候，可以辅助输出一些信息的命令集合。
diff --git a/src/SPC/ConsoleApplication.php b/src/SPC/ConsoleApplication.php
index 2609d3179..8d3fd59bf 100644
--- a/src/SPC/ConsoleApplication.php
+++ b/src/SPC/ConsoleApplication.php
@@ -18,6 +18,7 @@
 use SPC\command\dev\SortConfigCommand;
 use SPC\command\DoctorCommand;
 use SPC\command\DownloadCommand;
+use SPC\command\DumpExtensionsCommand;
 use SPC\command\DumpLicenseCommand;
 use SPC\command\ExtractCommand;
 use SPC\command\InstallPkgCommand;
@@ -54,6 +55,7 @@ public function __construct()
                 new MicroCombineCommand(),
                 new SwitchPhpVersionCommand(),
                 new SPCConfigCommand(),
+                new DumpExtensionsCommand(),
 
                 // Dev commands
                 new AllExtCommand(),
diff --git a/src/SPC/command/BaseCommand.php b/src/SPC/command/BaseCommand.php
index 7b79a4c8e..6a6c23137 100644
--- a/src/SPC/command/BaseCommand.php
+++ b/src/SPC/command/BaseCommand.php
@@ -154,24 +154,24 @@ protected function logWithResult(bool $result, string $success_msg, string $fail
     /**
      * Parse extension list from string, replace alias and filter internal extensions.
      *
-     * @param string $ext_list Extension string list, e.g. "mbstring,posix,sockets"
+     * @param array|string $ext_list Extension string list, e.g. "mbstring,posix,sockets" or array
      */
-    protected function parseExtensionList(string $ext_list): array
+    protected function parseExtensionList(array|string $ext_list): array
     {
         // replace alias
         $ls = array_map(function ($x) {
             $lower = strtolower(trim($x));
             if (isset(SPC_EXTENSION_ALIAS[$lower])) {
-                logger()->notice("Extension [{$lower}] is an alias of [" . SPC_EXTENSION_ALIAS[$lower] . '], it will be replaced.');
+                logger()->debug("Extension [{$lower}] is an alias of [" . SPC_EXTENSION_ALIAS[$lower] . '], it will be replaced.');
                 return SPC_EXTENSION_ALIAS[$lower];
             }
             return $lower;
-        }, explode(',', $ext_list));
+        }, is_array($ext_list) ? $ext_list : explode(',', $ext_list));
 
         // filter internals
         return array_values(array_filter($ls, function ($x) {
             if (in_array($x, SPC_INTERNAL_EXTENSIONS)) {
-                logger()->warning("Extension [{$x}] is an builtin extension, it will be ignored.");
+                logger()->debug("Extension [{$x}] is an builtin extension, it will be ignored.");
                 return false;
             }
             return true;
diff --git a/src/SPC/command/DumpExtensionsCommand.php b/src/SPC/command/DumpExtensionsCommand.php
new file mode 100644
index 000000000..ffb80a46b
--- /dev/null
+++ b/src/SPC/command/DumpExtensionsCommand.php
@@ -0,0 +1,160 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\command;
+
+use SPC\store\FileSystem;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputOption;
+
+#[AsCommand(name: 'dump-extensions', description: 'Determines the required php extensions')]
+class DumpExtensionsCommand extends BaseCommand
+{
+    protected bool $no_motd = true;
+
+    public function configure(): void
+    {
+        // path to project files or specific composer file
+        $this->addArgument('path', InputArgument::OPTIONAL, 'Path to project root', '.');
+        $this->addOption('format', 'F', InputOption::VALUE_REQUIRED, 'Parsed output format', 'default');
+        // output zero extension replacement rather than exit as failure
+        $this->addOption('no-ext-output', 'N', InputOption::VALUE_REQUIRED, 'When no extensions found, output default combination (comma separated)');
+        // no dev
+        $this->addOption('no-dev', null, null, 'Do not include dev dependencies');
+        // no spc filter
+        $this->addOption('no-spc-filter', 'S', null, 'Do not use SPC filter to determine the required extensions');
+    }
+
+    public function handle(): int
+    {
+        $path = FileSystem::convertPath($this->getArgument('path'));
+
+        $path_installed = FileSystem::convertPath(rtrim($path, '/\\') . '/vendor/composer/installed.json');
+        $path_lock = FileSystem::convertPath(rtrim($path, '/\\') . '/composer.lock');
+
+        $ext_installed = $this->extractFromInstalledJson($path_installed, !$this->getOption('no-dev'));
+        if ($ext_installed === null) {
+            if ($this->getOption('format') === 'default') {
+                $this->output->writeln('<comment>vendor/composer/installed.json load failed, skipped</comment>');
+            }
+            $ext_installed = [];
+        }
+
+        $ext_lock = $this->extractFromComposerLock($path_lock, !$this->getOption('no-dev'));
+        if ($ext_lock === null) {
+            $this->output->writeln('<error>composer.lock load failed</error>');
+            return static::FAILURE;
+        }
+
+        $extensions = array_unique(array_merge($ext_installed, $ext_lock));
+        sort($extensions);
+
+        if (empty($extensions)) {
+            if ($this->getOption('no-ext-output')) {
+                $this->outputExtensions(explode(',', $this->getOption('no-ext-output')));
+                return static::SUCCESS;
+            }
+            $this->output->writeln('<error>No extensions found</error>');
+            return static::FAILURE;
+        }
+
+        $this->outputExtensions($extensions);
+        return static::SUCCESS;
+    }
+
+    private function filterExtensions(array $requirements): array
+    {
+        return array_map(
+            fn ($key) => substr($key, 4),
+            array_keys(
+                array_filter($requirements, function ($key) {
+                    return str_starts_with($key, 'ext-');
+                }, ARRAY_FILTER_USE_KEY)
+            )
+        );
+    }
+
+    private function loadJson(string $file): array|bool
+    {
+        if (!file_exists($file)) {
+            return false;
+        }
+
+        $data = json_decode(file_get_contents($file), true);
+        if (!$data) {
+            return false;
+        }
+        return $data;
+    }
+
+    private function extractFromInstalledJson(string $file, bool $include_dev = true): ?array
+    {
+        if (!($data = $this->loadJson($file))) {
+            return null;
+        }
+
+        $packages = $data['packages'] ?? [];
+
+        if (!$include_dev) {
+            $packages = array_filter($packages, fn ($package) => !in_array($package['name'], $data['dev-package-names'] ?? []));
+        }
+
+        return array_merge(
+            ...array_map(fn ($x) => isset($x['require']) ? $this->filterExtensions($x['require']) : [], $packages)
+        );
+    }
+
+    private function extractFromComposerLock(string $file, bool $include_dev = true): ?array
+    {
+        if (!($data = $this->loadJson($file))) {
+            return null;
+        }
+
+        // get packages ext
+        $packages = $data['packages'] ?? [];
+        $exts = array_merge(
+            ...array_map(fn ($package) => $this->filterExtensions($package['require'] ?? []), $packages)
+        );
+
+        // get dev packages ext
+        if ($include_dev) {
+            $packages = $data['packages-dev'] ?? [];
+            $exts = array_merge(
+                $exts,
+                ...array_map(fn ($package) => $this->filterExtensions($package['require'] ?? []), $packages)
+            );
+        }
+
+        // get require ext
+        $platform = $data['platform'] ?? [];
+        $exts = array_merge($exts, $this->filterExtensions($platform));
+
+        // get require-dev ext
+        if ($include_dev) {
+            $platform = $data['platform-dev'] ?? [];
+            $exts = array_merge($exts, $this->filterExtensions($platform));
+        }
+
+        return $exts;
+    }
+
+    private function outputExtensions(array $extensions): void
+    {
+        if (!$this->getOption('no-spc-filter')) {
+            $extensions = $this->parseExtensionList($extensions);
+        }
+        switch ($this->getOption('format')) {
+            case 'json':
+                $this->output->writeln(json_encode($extensions, JSON_PRETTY_PRINT));
+                break;
+            case 'text':
+                $this->output->writeln(implode(',', $extensions));
+                break;
+            default:
+                $this->output->writeln('<info>Required PHP extensions' . ($this->getOption('no-dev') ? ' (without dev)' : '') . ':</info>');
+                $this->output->writeln(implode(',', $extensions));
+        }
+    }
+}